Role of longitudinal reinforcement on the behavior of under reinforced concrete beams subjected to fatigue loading

被引：19

作者：

Prashanth, M. H. ^{[1
,3
]}

Singh, Parvinder ^{[2
]}

Kishen, J. M. Chandra ^{[2
]}

机构：

[1] Natl Inst Technol Karnataka, Dept Civil Engn, Surathkal 575025, India

[2] Indian Inst Sci, Dept Civil Engn, Bangalore 560012, Karnataka, India

[3] Indian Inst Sci, Bangalore, Karnataka, India

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2019年 / 125卷

关键词：

Fatigue; Stiffness degradation; Reinforced concrete; Acoustic emission; Yielding; CRACK GROWTH; DAMAGE;

D O I：

10.1016/j.ijfatigue.2019.03.047

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this work, the role of steel reinforcement in under reinforced concrete beams when subjected to flexural fatigue loading is studied using the acoustic emission (AE) technique. Three-point bend notched beams of three different sizes and with varying reinforcement ratios are subjected to step-wise increasing variable amplitude fatigue loading. The crack mouth opening displacement (CMOD) and AE parameters are analyzed to study the evolution of damage, load carrying and failure mechanisms in under reinforced concrete beams. It is concluded that the presence of reinforcement substantially increases the fatigue life. Further, the CMOD could be used as a criterion for failure in reinforced concrete beams under fatigue loading.

引用

页码：271 / 290

页数：20

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